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feature: add support for Digital Yacht’s iKonvert (#28)
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,49 @@ | ||
| #!/usr/bin/env node | ||
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| const { Transform } = require('stream'); | ||
| const SerialPort = require('serialport') | ||
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| if ( process.argv.length < 3 ) { | ||
| console.error('Please specify a device') | ||
| console.error('usage: ikonvert-serial [device] [baud,default:230400]') | ||
| process.exit(1) | ||
| } | ||
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| let device = process.argv[2] | ||
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| let baud = process.argv.length > 3 ? Number(process.argv[3]) : 230400 | ||
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| let serial = new SerialPort(device, { | ||
| baudRate: baud | ||
| }) | ||
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| const toStringTr = new Transform({ | ||
| objectMode: true, | ||
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| transform(line, encoding, callback) { | ||
| //this.push(JSON.stringify(chunk) + "\n"); | ||
| console.log(line) | ||
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| if ( line.startsWith('$PDGY,000000,,,,,') ) { | ||
| serial.write('$PDGY,N2NET_INIT,ALL\r\n') | ||
| } | ||
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| callback(); | ||
| } | ||
| }); | ||
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| serial.on( | ||
| 'open', | ||
| function () { | ||
| const parser = new SerialPort.parsers.Readline() | ||
| serial.pipe(parser).pipe(toStringTr) | ||
| } | ||
| ) | ||
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| serial.on( | ||
| 'error', | ||
| function (x) { | ||
| console.log(x) | ||
| } | ||
| ) | ||
|
|
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,175 @@ | ||
| /** | ||
| * Copyright 2018 Scott Bender (scott@scottbender.net) | ||
| * | ||
| * Licensed under the Apache License, Version 2.0 (the "License"); | ||
| * you may not use this file except in compliance with the License. | ||
| * You may obtain a copy of the License at | ||
| * | ||
| * http://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, software | ||
| * distributed under the License is distributed on an "AS IS" BASIS, | ||
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| * See the License for the specific language governing permissions and | ||
| * limitations under the License. | ||
| */ | ||
|
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| const debug = require('debug')('canboatjs:ikonvert') | ||
| const Transform = require('stream').Transform | ||
| const isArray = require('lodash').isArray | ||
| const BitStream = require('bit-buffer').BitStream | ||
| const BitView = require('bit-buffer').BitView | ||
| const {toPgn, pgnToiKonvertSerialFormat} = require('./toPgn') | ||
| const Parser = require('./fromPgn').Parser | ||
| const _ = require('lodash') | ||
| const CanDevice = require('./candevice') | ||
| const spawn = require('child_process').spawn | ||
| const { getPGNFromCanId, getCanIdFromPGN, actisenseSerialToBuffer, defaultTransmitPGNs } = require('./utilities') | ||
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| const pgnsSent = {} | ||
| const rateLimit = 200 | ||
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| function iKonvertStream (options) { | ||
| if (!(this instanceof iKonvertStream)) { | ||
| return new iKonvertStream(options) | ||
| } | ||
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| Transform.call(this, { | ||
| objectMode: true | ||
| }) | ||
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| this.plainText = false | ||
| this.reconnect = options.reconnect || true | ||
| this.options = options | ||
| this.cansend = false | ||
| this.buffer = new Buffer(500) | ||
| this.bufferOffset = 0 | ||
| this.start() | ||
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| this.setProviderStatus = options.app && options.app.setProviderStatus | ||
| ? (msg) => { | ||
| options.app.setProviderStatus(options.providerId, msg) | ||
| } | ||
| : () => {} | ||
| this.setProviderError = options.app && options.app.setProviderError | ||
| ? (msg) => { | ||
| options.app.setProviderError(options.providerId, msg) | ||
| } | ||
| : () => {} | ||
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| var that = this | ||
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| if ( this.options.app ) { | ||
| options.app.on('nmea2000out', (msg) => { | ||
| that.sendActisensePGN(msg) | ||
| }) | ||
| options.app.on('nmea2000JsonOut', (msg) => { | ||
| that.sendPGN(msg) | ||
| }) | ||
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| this.sendString('$PDGY,N2NET_OFFLINE') | ||
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| debug('started') | ||
| //this.options.app.emit('nmea2000OutAvailable') | ||
| } | ||
| } | ||
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| require('util').inherits(iKonvertStream, Transform) | ||
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| iKonvertStream.prototype.start = function () { | ||
| } | ||
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| iKonvertStream.prototype.sendString = function (msg) { | ||
| debug('sending %s', msg) | ||
| this.options.app.emit('ikonvertOut', msg) | ||
| } | ||
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| iKonvertStream.prototype.sendPGN = function (pgn) { | ||
| if ( this.cansend ) { | ||
| let now = Date.now() | ||
| let lastSent = pgnsSent[pgn.pgn] | ||
| if ( !lastSent || now - lastSent > rateLimit ) { | ||
| let msg = pgnToiKonvertSerialFormat(pgn) | ||
| this.sendString(msg) | ||
| pgnsSent[pgn.pgn] = now | ||
| } | ||
| } | ||
| } | ||
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| iKonvertStream.prototype.sendActisensePGN = function (msg) { | ||
| if ( this.cansend ) { | ||
| if ( !this.parser ) { | ||
| this.parser = new Parser() | ||
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| let that = this | ||
| this.parser.on('error', (pgn, error) => { | ||
| console.error(`Error parsing ${pgn.pgn} ${error}`) | ||
| console.error(error.stack) | ||
| }) | ||
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| this.parser.on('pgn', (pgn) => { | ||
| let now = Date.now() | ||
| let lastSent = pgnsSent[pgn.pgn] | ||
| if ( !lastSent || now - lastSent > rateLimit ) { | ||
| let msg = pgnToiKonvertSerialFormat(pgn) | ||
| that.sendString(msg) | ||
| pgnsSent[pgn.pgn] = now | ||
| } | ||
| }) | ||
| } | ||
| this.parser.parseString(msg) | ||
| } | ||
| } | ||
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| iKonvertStream.prototype.setup = function () { | ||
| let txPgns = '$PDGY,TX_LIST' | ||
| defaultTransmitPGNs.forEach(pgn => { | ||
| txPgns = txPgns + `,${pgn}` | ||
| }) | ||
| debug('sending pgn tx list') | ||
| this.sendString(txPgns) | ||
| } | ||
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| iKonvertStream.prototype._transform = function (chunk, encoding, done) { | ||
| let line = chunk.toString().trim() | ||
| line = line.substring(0, line.length) // take off the \r | ||
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| if ( line.startsWith('$PDGY') ) { | ||
| if ( line === '$PDGY,000000,,,,,,' ) { | ||
| //the iKonvert is not initialized | ||
| if ( !this.didSetup ) { | ||
| this.setup() | ||
| this.setProviderStatus('Initializing...') | ||
| this.didSetup = true | ||
| } | ||
| } else if ( line === '$PDGY,ACK,TX_LIST' ) { | ||
| debug('sending net init') | ||
| this.sendString('$PDGY,N2NET_INIT,ALL') | ||
| this.setProviderStatus('Initialized...') | ||
| } else if ( line === '$PDGY,ACK,N2NET_INIT,ALL' && !this.cansend ) { | ||
| this.cansend = true; | ||
| this.setProviderStatus('Connected') | ||
| //this.sendString('$PDGY,SHOW_LISTS') | ||
| } else if ( line.startsWith('$PDGY,TEXT') ) { | ||
| debug(line) | ||
| } else if ( line.startsWith('$PDGY,000000') ) { | ||
| let parts = line.split(',') | ||
| debug('ikonvert can address: %s', parts[6]) | ||
| debug(line) | ||
| } else if ( line.startsWith('$PDGY,NAK') ) { | ||
| let parts = line.split(',') | ||
| let msg = `iKonvert error ${parts[2]}: ${parts[3]}` | ||
| console.error(msg) | ||
| this.setProviderError(msg) | ||
| } | ||
| } else { | ||
| this.push(line) | ||
| } | ||
|
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| done() | ||
| } | ||
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| iKonvertStream.prototype.end = function () { | ||
| } | ||
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| module.exports = iKonvertStream |
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